系统安全版不见了，只好发在这里

[RegentW]

今天开始我的WWW服务器的access.log里出现大量如下的内容：
58.62.239.212 - - [28/Nov/2007:18:40:26 +0800] "<" 501 289 "-" "-"
58.55.17.19 - - [28/Nov/2007:18:48:23 +0800] "<" 501 289 "-" "-"
58.55.17.19 - - [28/Nov/2007:18:48:44 +0800] "<" 501 289 "-" "-"
58.55.17.19 - - [28/Nov/2007:18:49:04 +0800] "<" 501 289 "-" "-"
58.55.17.19 - - [28/Nov/2007:18:49:45 +0800] "<" 501 289 "-" "-"
218.20.217.6 - - [28/Nov/2007:18:53:37 +0800] "<" 501 289 "-" "-"
218.20.217.6 - - [28/Nov/2007:18:53:58 +0800] "<" 501 289 "-" "-"
58.55.17.19 - - [28/Nov/2007:18:54:06 +0800] "<" 501 289 "-" "-"
218.20.217.6 - - [28/Nov/2007:18:54:19 +0800] "<" 501 289 "-" "-"
59.40.185.221 - - [28/Nov/2007:18:55:12 +0800] "<" 501 289 "-" "-"
59.40.185.221 - - [28/Nov/2007:18:56:05 +0800] "<" 501 289 "-" "-"
59.40.185.221 - - [28/Nov/2007:18:57:00 +0800] "<" 501 289 "-" "-"
59.40.185.221 - - [28/Nov/2007:18:58:04 +0800] "<" 501 289 "-" "-"
59.40.185.221 - - [28/Nov/2007:18:58:29 +0800] "<" 501 289 "-" "-"
59.40.185.221 - - [28/Nov/2007:18:59:16 +0800] "<" 501 289 "-" "-"
59.40.185.221 - - [28/Nov/2007:18:59:57 +0800] "<" 501 289 "-" "-"
59.40.185.221 - - [28/Nov/2007:19:00:38 +0800] "<" 501 289 "-" "-"
59.40.185.221 - - [28/Nov/2007:19:01:19 +0800] "<" 501 289 "-" "-"
59.40.185.221 - - [28/Nov/2007:19:02:40 +0800] "<" 501 289 "-" "-"
202.103.141.181 - - [28/Nov/2007:19:04:03 +0800] ":" 501 286 "-" "-"
我是不是受到攻击了？